When a muscle is stimulated prior to full relaxation of a previous contraction and the second stimulus is added to the first contraction, this phenomenon is referred to as ________

A) summation B) twitch C) fatigue D) tetanus


Answer: A

Biology & Microbiology

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____ learning is also called ____ and occurs when an animal learns that two events are correlated

Fill in the blank with the appropriate word.

Biology & Microbiology

In a human male, how many total chromatids are present in cell number 4?

a. 2 b. 4 c. 23 d. 46 e. 92

Biology & Microbiology

The primer used for DNA replication

a. is a short strand of RNA added to the 3? end. b. is needed only once on a leading strand. c. remains on the DNA after replication. d. ensures that there will be a free 5? end to which nucleotides can be added. e. is added to only one of the two template strands.

Biology & Microbiology

Ribosomes are made up of which kind of nucleic acid?

A) mRNA B) tRNA C) rRNA D) DNA

Biology & Microbiology